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https://dev.mysql.com/doc/refman/8.0/en/replication-multi-source.html
In a multi-source replication topology, a replica creates a replication channel for each source that it should receive transactions from. Channel specific replication filters can be used when the same database or table is present on multiple ...
https://dev.mysql.com/doc/refman/8.0/en/server-loadable-functions.html
For a table describing the available loadable functions, see Section 14.2, “Loadable Function Reference”. Loadable functions contrast with built-in (native) functions, which are implemented as part of the server and are always available; for a ... MySQL supports loadable functions, that is, functions that are not built in but can be loaded at runtime (either during startup or later) to extend server capabilities, or unloaded to remove ...
https://dev.mysql.com/doc/refman/8.0/en/starting-server-troubleshooting.html
You can create a my.cnf file and specify startup options for the engines that you plan to use. If you are going to use storage engines that support transactional tables (InnoDB, NDB), be sure that you have them configured the way you want before ...
https://dev.mysql.com/doc/refman/8.0/en/starting-server.html
Such problems can occur if you neglected to create the grant tables by initializing the data directory before proceeding to this step, or if you ran the command that initializes the data directory without the --user option. If the server is unable ... This section describes how start the server on Unix and Unix-like ...
https://dev.mysql.com/doc/refman/8.0/en/windows-testing.html
In this case, start mysqld with the skip_name_resolve system variable enabled and use only localhost and IP addresses in the Host column of the MySQL grant tables. If you have set a password for the root account, deleted the anonymous account, or ...
https://dev.mysql.com/doc/refman/8.0/en/xml-functions.html
Table 14.16 XML Functions Name Description ExtractValue() Extract a value from an XML string using XPath notation UpdateXML() Return replaced XML fragment This section discusses XML and related functionality in MySQL. Do not output explicit error ...Note It is possible to obtain XML-formatted output from MySQL in the mysql and mysqldump clients by invoking them with the --xml ...
https://dev.mysql.com/doc/refman/8.0/en/adding-character-set.html
For a simple character set, create a configuration file, MYSET.xml, that describes the character set properties. For a complex character set, create a C source file that describes the character set properties and defines the support routines ...
https://dev.mysql.com/doc/refman/8.0/en/docker-mysql-getting-started.html
Downloading the server image in a separate step is not strictly necessary; however, performing this step before you create your Docker container ensures your local image is up to date. For example: $> docker ps CONTAINER ID IMAGE COMMAND CREATED ...
https://dev.mysql.com/doc/refman/8.0/en/gis-general-property-functions.html
For example: SET @g1 = ST_SRID(Point(1, 1), 4326); However, that method creates the geometry in SRID 0, then casts it to SRID 4326 (WGS 84). A preferable alternative is to create the geometry with the correct spatial reference system to begin with.
https://dev.mysql.com/doc/refman/8.0/en/group-replication-background.html
The most common way to create a fault-tolerant system is to resort to making components redundant, in other words the component can be removed and the system should continue to operate as expected. This creates a set of challenges that raise ...